WHAT IS THIS

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Feb 16, 2023

judgejohnmd

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Joined: Sep 2022

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From: Aberdeen

WHAT IS THIS

What is the purpose of this? What effect does rotating the *** have, if any? 97 4.0.
Thanks!

Judgejohnmd

Feb 16, 2023

Fordzilla80

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From: Moderator Town, Moderator

That's the idle air control valve, which controls the airflow around the throttle butterfly when it's in the closed position (idle).

Feb 16, 2023

judgejohnmd

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From: Aberdeen

Does turning the **** have any effect on the operation of the engine?

Feb 16, 2023

Fordzilla80

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From: Moderator Town, Moderator

No, it is like a vent. If you remove the black cap, there is a tiny filter underneath it. It does not affect the operation of the engine or IAC. It was removed from later versions.

Feb 19, 2023

Glaze77

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Joined: Jul 2021

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From: Gainesville, GA

I turned my **** quarter turn and got like 3 feet of air.

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